[DRBD-user] examples of dual primary DRBD

Bart Coninckx bart.coninckx at telenet.be
Sat Oct 8 13:31:28 CEST 2011

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On 10/08/11 00:25, Lars Ellenberg wrote:
> On Fri, Oct 07, 2011 at 10:21:08PM +0200, Bart Coninckx wrote:
>> On 10/06/11 22:03, Florian Haas wrote:
>>> On 2011-10-06 21:43, Bart Coninckx wrote:
>>>> Hi all,
>>>> would you mind sending me examples of your crm config for a dual primary
>>>> DRBD resource?
>>>> I used the one on
>>>> http://www.drbd.org/users-guide/s-ocfs2-pacemaker.html
>>>> and on
>>>> http://www.clusterlabs.org/wiki/Dual_Primary_DRBD_%2B_OCFS2
>>>> and they both result into split brain, except for when I start drbd
>>>> manually first.
>>> They clearly should not. Rather than soliciting other people's
>>> configurations and then try to adapt yours based on that, why don't you
>>> upload _your_ CIB (not just a "crm configure dump", but a full "cibadmin
>>> -Q") and your DRBD configuration to your pastebin/pastie/fpaste and let
>>> people tell you where your problem is?
>> OK, I posted the drbd.conf on http://pastebin.com/SQe9YxhY
>> cibadmin -Q is on http://pastebin.com/gTZqsACq
>> The split brain logging is on http://pastebin.com/7unKKkdi .
> I somehow think you added some "--force" or "--overwrite-data-of-peer"
> to some drbdadm/drbdsetup primary invocation?


I re-created the metadata to start all over, and the

drbdadm -- --overwrite-data-of-peer primary r_test

command has to been done according to SLES docs for the initial sync.

So if that particular command is the problem, we either have faulty 
documentation or me wrongly interpreting the docs.

Which has your bet?



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